Where to buy square head screws
I am trying to modify my TD-3 rack. I am going to make the rack wider with some 1-1/2" aluminum tubing I picked up. I am getting a TD-6V soon and will be adding a 4th Tom pad. I also have a rack from a TD-5 and I would like to use some of the clamps/fittings off it when making this rack but the TD-5 rack uses some allen head bolts on the clamps etc. so I would like to buy the same type bolts that the TD-3 rack has. I think they are the same type of bolt head used on acoustic drums. I looked at the Gibralter site and searched here as well as a few other web sites with no success. If anyone knows a source for these bolts I would appreciate it greatly.
Ignorant Newb-the following is in a state of flux. TD-6/TD-3 "Stacked" modules. PD-85BK Snare, FD-7 HH Pedal/CY-8, 2 CY-8 Crash/Ride,4-Alesis RealHead Toms with Pearl Muffle Head Mesh conversion, VST-AD, Behringer headphone amp, Audiophile 192 PCI card.